85444291850 has 24 divisors (see below), whose sum is σ = 161924998860. Its totient is φ = 33532853120.

The previous prime is 85444291819. The next prime is 85444291873. The reversal of 85444291850 is 5819244458.

It can be written as a sum of positive squares in 6 ways, for example, as 53274640969 + 32169650881 = 230813^2 + 179359^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16118915 + ... + 16124214.

Almost surely, 2^85444291850 is an apocalyptic number.

85444291850 is a deficient number, since it is larger than the sum of its proper divisors (76480707010).

85444291850 is a wasteful number, since it uses less digits than its factorization.

85444291850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32243194 (or 32243189 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 50.

The spelling of 85444291850 in words is "eighty-five billion, four hundred forty-four million, two hundred ninety-one thousand, eight hundred fifty".